REM Lines that begin 'REM' are explanatory remarks addressed to the human reader.

REM The machine will ignore them.

LET n = 269696

REPEAT

  LET n = n + 1000000

  REM Find the next number that ends in 269,696.

  REM The function SQR finds the square root.

  LET root = SQR n

  REM The function INT truncates a real number to an integer.

UNTIL root = INT root

REM If the square root is equal to its integer truncation, then it is an integer: so we have found our answer.

PRINT "The smallest number whose square ends in 269696 is" root

PRINT "Its square is" n